package com.yjq0713.test5;

public class Computer {
    public int add(int a, int b) {
        return a + b;
    }

    public int red(int a, int b) {
        return a - b;
    }

    public int shen(int a, int b) {
        return a * b;
    }

    public int div(int a, int b) {
        return a / b;
    }
}
